create JWT

createJWT.py

import base64
import json
import hmac
import hashlib
 
encoding = "utf-8"
secret = "<API_KEY_SHARED_SECRET>".encode(encoding)
iat = 1600116847
exp = 1600203247
    
jwt_header = json.dumps(
   { "alg": "HS256", "typ": "JWT" }, separators=(",", ":")
).encode(encoding)
 
jwt_payload = json.dumps(
   {"userId": "<USER_ID>", "iat": iat, "exp": exp}, separators=(",", ":")
).encode(encoding)
 
encoded_header_bytes = base64.urlsafe_b64encode(jwt_header).replace(b"=", b"")
encoded_payload_bytes = base64.urlsafe_b64encode(jwt_payload).replace(b"=", b"")
 
jwt_signature = hmac.digest(
   key=secret,
   msg=b".".join([encoded_header_bytes, encoded_payload_bytes]),
   digest=hashlib.sha256
)
 
encoded_signature_bytes = base64.urlsafe_b64encode(jwt_signature).replace(b"=", b"")
 
jwt_returned = (
   f"{str(encoded_header_bytes, encoding)}" +
   f".{str(encoded_payload_bytes, encoding)}" +
   f".{str(encoded_signature_bytes, encoding)}"
)
 
# Verify this token at https://jwt.io/#debugger-io
print(jwt_returned)